שִׁנַּ֙יִךְ֙ כְּעֵ֣דֶר הָֽרְחֵלִ֔ים שֶׁעָל֖וּ מִן־הָרַחְצָ֑ה שֶׁכֻּלָּם֙ מַתְאִימ֔וֹת וְשַׁכֻּלָ֖ה אֵ֥ין בָּהֶֽם׃
Tus dientes, como manada de ovejas Que suben del lavadero, Todas con crías mellizas, Y estéril no hay entre ellas.
Rashi on Song of Songs
Your teeth. The officers and the mighty that are among you are entirely good.
Rashi on Song of Songs
Like a counted flock. The ewe can entirely be utilized for holy purposes: its wool is for blue thread, its flesh for sacrifice, its horns for shofars, its thighs for flutes, its intestines for harp [strings], its hide for a drum. But the wicked [i.e., nations] were likened to dogs, for they are entirely unuseable for holy purposes.